End cap for paper cores



Oct. 3, 1933- A REAGLES 1,929,033

END CAP FOR PAPER CORES 7 Filed April 1, 1932 INVENTOR @m/& L Peg/esATTORNEY Patented Oct. 3, 1933 UNITED STATES 1,929,033 1 7 END CAP FORPAPER corms Annie 77L. Beagles, Corinth,

Y., assignor to Elixman Paper Core Co.,Inc., Corinth, N. Y. acorporation of Newlfork Application April 1, 1932. Serial No. 602,460 2Claims. (Cl. 242-68) This invention is for a new and improved end capfor paper cores of large diameter. It is well known that rolls of paperfrom the mills are' wound on tubular cores, usually of paper, and thesecores have always been provided with metal caps for connection with adriving shaft. In cores of small diameter, the caps are notched at therim to receive a driving lug, but this arrangement is not practical forcores of large size, in which the driving connection should be central.For this purpose, core manufacturers have heretofore found it necessaryto provide these large cores with metal plugs having a square hole atthe center into which a squaredriving shaft is inserted. These plugs arecomparatively'heavy and expensive, two practical objections which myinvention successfully overcomes.

My new end cap for large'cores is a sheet metal member with outer andinner sleeves, between which the end of the core is received in a tightfit. The inner end of the inner sleeve carries an integral disk or webwhich has a non-circular (usually square) hole at the center forreceiving a similarly shaped driving shaft. The metal of the disk or webaround the hole is bent back to form flanges which afford a broadbearing surface for the shaft, and it is preferable to attach areinforcing washer of steel to one face of the web. This washer has ahole fitting over the flanges on the web, whereby these flanges areconsiderably strengthened to withstand the torque of the driving shaft.

My invention will be fully understood from a detailed description of theaccompanying drawing, in which Fig. 1 is an axial section through my newcap in position on a'core; and

Fig. 2 is a. transverse section on line 2-2 of Fig. 1.

The cap comprises an outer sleeve 10, an inner:

sleeve 12, an annular web 13, and a disk or web 14. These parts areshaped from a single piece of sheet steel or other practical material.The,

sleeves 10 and 12 are properly spaced to receive the end of a tubularcore 15 in a tight fit, and the cap is locked to the core in anypractical way, as by being indented at 16. The web 14 is provided with acentral opening 17 of non-circular shape, preferably square. The metalaround the opening 17 is bent back to form fiat flanges 18, whichprovide ample bearing surface for a driving shaft inserted through hole17. 'As a further means for strengthening the metal around this drivinghole, I attach a heavy metal washer 19 to the back side of web 14. Thewasher 19 has an opening so shapedthat the washer fits snugly I mayextend almost to the thus far. fully demonstrated,

' one face of said disk, said washer washer 19 is attached in anypractical way, as by rivets 20 or by spot welding.

In practice the diameter of my new cap will vary from eight inches forlarge paper cores to five inches for the smaller cores. I give thesefigures not as limitations" of my invention, but merely to indicate thesize of cores actually in use. The driving hole 17 may vary from 1inches to'2 inches across, but these figures are merely illustrative.The reinforcing washer 19 outer periphery of web 14, as in the exampleshown in the drawing, but in caps of larger diameter it need not extendInvarious caps that I have successthe washer 19 has a diameter ofaboutfour inches, both for normal-sized and extra-large caps. Innormal-sized caps, where the corners 21 of the'square hole 17 extendvery closeto the innercylindrical sleeve 12, as shown in Fig. 2, thewasher 19 may be omitted, because the proximityof sleeve'12 to thecorners 21 acts as a reinforcement which prevents tearing of the hole atthe corners.

Although I have shown and described a specific structure, I want itunderstood that my in vention is not limitedtothe exact details setforth. Changes and modifications may be made within the scope oftheappended claims.

- .I claim as myinvention:

1. An end capfor tubular cores, comprising a pair of spaced sleevesconnected at their outer ends by an integral web, said sleeves beingadapted to receive the end of a core in a tight fit, a disk or webformed integral with the inner end of said inner sleeve and having apolygonal hole at the center, the corners of said hole being so close tothe inner sleeve that the latter acts as areinforcement to preventtearing of the hole at the corners, and integral flanges on said disk orpair of spaced sleeves connected at their outer ends by an integral web,said sleeves being adapted to receive the endof a core in a tight fit, adisk. or web vformed integral with the inner end of said inner sleeveand having a non-circular hole at the center, integral flanges on saiddisk or web around said hole and projecting axially of the core, wherebysaid flanges provide broad bearing surfaces for a driving memberinserted in said hole, and a reinforcing washer secured to having a holeshaped to fit over said flanges.

. ANNIE L. REAGLES.

